Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Lilian Velásquez-Yévenes"'
Autor:
Lilian Velásquez-Yévenes, Rahul Ram
Publikováno v:
Cleaner Engineering and Technology, Vol 9, Iss , Pp 100515- (2022)
The dissolution of copper during the leaching of chalcopyrite in ammonia solutions is an attractive alternative to acid sulfate leaching in the treatment of ores with high consumption of acid. Despite considerable research into this complex leaching
Externí odkaz:
https://doaj.org/article/0240c44d4ba44871a4566ce85af7163a
Publikováno v:
Minerals, Vol 12, Iss 4, p 487 (2022)
This paper reports on a study of column bioleaching of a low-grade chalcopyrite ore that is currently dump-leached under natural biological conditions without any control over microbial populations. The experimental methodology was focused on the eff
Externí odkaz:
https://doaj.org/article/cff0320b7dc349f98fe6eea0e3060fe2
Publikováno v:
Materials, Vol 14, Iss 16, p 4529 (2021)
The dissolution of both copper and arsenic from a copper concentrate was investigated in oxidative ammonia/ammonium solutions at moderate temperatures and atmospheric pressure. The main parameters studied were temperature, pH, concentrations of diffe
Externí odkaz:
https://doaj.org/article/b8ca1f07d9ab4359be85e5b5aa7bfb2d
Publikováno v:
Metals, Vol 11, Iss 7, p 1067 (2021)
Although the main cause of hydrometallurgical plant closures is the depletion of oxidized copper minerals reserves, the lack of new hydrometallurgy projects also contributes to these closures. One solution is to be able to process copper sulphide ore
Externí odkaz:
https://doaj.org/article/8799a5be1f3b4ee09a7944a3a74e3400
Publikováno v:
Metals, Vol 10, Iss 4, p 518 (2020)
An alternative copper concentrate leaching process using sodium nitrate and sulfuric acid diluted in seawater followed by gas scrubbing to recover the sodium nitrate has been evaluated. The work involved leaching test carried out under various condit
Externí odkaz:
https://doaj.org/article/f0a245ed627e4411a3364864c170f12a
Publikováno v:
Materials
Materials, Vol 14, Iss 4529, p 4529 (2021)
Volume 14
Issue 16
Materials, Vol 14, Iss 4529, p 4529 (2021)
Volume 14
Issue 16
The dissolution of both copper and arsenic from a copper concentrate was investigated in oxidative ammonia/ammonium solutions at moderate temperatures and atmospheric pressure. The main parameters studied were temperature, pH, concentrations of diffe
Publikováno v:
Hydrometallurgy. 181:215-220
It is well known that the leaching of chalcopyrite has very slow kinetics. The generally higher reactivity of chalcopyrite in chloride as opposed to sulfate solutions has resulted in many studies of chloride systems for the hydrometallurgical treatme
Publikováno v:
Metals
Volume 10
Issue 4
Metals, Vol 10, Iss 518, p 518 (2020)
Volume 10
Issue 4
Metals, Vol 10, Iss 518, p 518 (2020)
An alternative copper concentrate leaching process using sodium nitrate and sulfuric acid diluted in seawater followed by gas scrubbing to recover the sodium nitrate has been evaluated. The work involved leaching test carried out under various condit
Publikováno v:
Hydrometallurgy. 180:88-95
It is well known that the Chilean mining industry is facing a shortage of water resources for the sustainable operation not only of existing plants but also of future projects. In addition, the depletion of oxide ores and those containing secondary s
Publikováno v:
Metals, Vol 11, Iss 1067, p 1067 (2021)
Although the main cause of hydrometallurgical plant closures is the depletion of oxidized copper minerals reserves, the lack of new hydrometallurgy projects also contributes to these closures. One solution is to be able to process copper sulphide ore